To cite okapi in publications use:

Ernest Guevarra (2026). okapi: Open Data Kit (ODK)-based Computer-assisted Personal Interview (CAPI) Tools. doi:10.5281/zenodo.206914853. R package version 0.1.2, https://rapidsurveys.io/okapi/.

Corresponding BibTeX entry:

  @Manual{,
    title = {okapi: Open Data Kit (ODK)-based Computer-assisted
      Personal Interview (CAPI) Tools},
    author = {{Ernest Guevarra}},
    year = {2026},
    note = {R package version 0.1.2},
    url = {https://rapidsurveys.io/okapi/},
    doi = {10.5281/zenodo.206914853},
  }